TableSelect::lockShared
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TableSelect::lockShared — Execute SHARED LOCK
Descrierea
public mysql_xdevapi\TableSelect::lockShared
( int
$lock_waiting_option = ?
) : mysql_xdevapi\TableSelectExecute a read operation with SHARED LOCK. Only one lock can be active at a time.
Parametri
-
lock_waiting_option -
The optional waiting option that defaults to
MYSQLX_LOCK_DEFAULT. Valid values are:MYSQLX_LOCK_DEFAULTMYSQLX_LOCK_NOWAITMYSQLX_LOCK_SKIP_LOCKED
Valorile întoarse
A TableSelect object.
Exemple
Example #1 mysql_xdevapi\TableSelect::lockShared() example
<?php
$session = mysql_xdevapi\getSession("mysqlx://user:password@localhost");
$schema = $session->getSchema("addressbook");
$table = $schema->getTable("names");
$session->startTransaction();
$result = $table->select('name', 'age')
->lockShared(MYSQLX_LOCK_NOWAIT)
->execute();
$session->commit();
$row = $result->fetchAll();
print_r($row);
?>
Exemplul de mai sus va afișa ceva similar cu:
Array
(
[0] => Array
(
[name] => John
[age] => 42
)
[1] => Array
(
[name] => Sam
[age] => 42
)
)
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